Keystone Pipeline

Climate activist convicted after pipeline protest in Montana

An activist who was trying to call attention to climate change was found guilty of criminal charges on Wednesday for closing a valve last year on a pipeline carrying crude oil from Canada to the United States.

A Montana jury found Leonard Higgins of Portland, Oregon, guilty of criminal mischief and trespassing.

Higgins could face up to 10 years in prison and a $50,000 fine on the felony criminal mischief charge. Trespassing is a misdemeanor with a penalty of up to six months in county jail and a $500 fine.

A sentencing hearing is scheduled for Jan. 2. Court officials initially said Higgins would be sentenced Wednesday.

In a written statement, Higgins said he...